Cross feed mechanism for slicing machines



Oct. 19, 1937. o. THEURER ,CROSS FEED MECHANVAISM FOR SLICING MACHINES Filed June 12, 193s 3 Sheets-Sheet 1 ATTORNEY Oct. 19, 1,937. o. THEURER CROSS FEED MECHANISM FOR SLICING MACHINES Filed June 12, 1936 3 Sheets-Sheet 2 INVENTOR ia fw/e/ .Plv N@ Oct. 19, 1937. o. 'rHEuRER 2,096,212

CROSS FEED MECHANISM FOR SLICING MACHINES Y Filed June 12, 193s s sheets-sheet'I s dif@ gill-:122;r

Patented Oct. 19, 1937 PATENT OFFlCE oRoss'FEEDMECHANIsM FOR SLICING MACHINES Otto Theurer, Brooklyn, N. Y., assigner to Edward I. Friedman, New York, N. Y., and Harry Wiener, Brooklyn, N. Y.

`Application June 12, 1936, Serial No. 84,808

2 Claims. (Cl. 14S-102) The present invention` .relates to automatic mechanisms whereby a member slidably mounted on a reciprocatingcarriage, is periodically advanced thereon, avpredetermined distance Vtransverse the line of travel of said carriage, and including means for effecting various adjustments, which mechanisms are particularly adaptable for embodiment in food slicing machines as the cross feed mechanism therefor, whereby the substance 10. to be sliced is advanced beyond the plane of the knife, once per cycle 4of the reciprocating carriage which conveys the substance so that the knife enters the latter.` v i The principal objectof this invention is to provide mechanisms of the typeV mentioned of novel and improved construction for periodically advancing the food substance beyond the plane of the knife, a distance equal to the thickness of the slice desired.

2O Another object is to provide a novel and improved mechanism of the character described, in which but a single adjustment will set the range of VeachA advance and simultaneously correctly position a gauge plate which acts as a supporting 2 5 wall for the substance sliced.

A vA further object is to `provide a novel and improved mechanism carried and automatically operated upon the reciprocationof the carriage, :whereby its motion on the carriage transverse the :30 direction of travel vof the carriage, will never be beyond a definite position, regardless of continued motion of the carriage. Embodying such in a. slicing machine. construction, the member on the carriage for advancing the food substance, will cease itsrmovement on the carriage at a delinite position before the plane of the knife, although there is further movementr of the carriage.

Other objects and novel features of this invention will become manifest as the description pro- 540 ceeds.

In the accompanying drawings forming part of Ythis application, similar characters of reference indicate corresponding parts in all the views. 45 Fig. 1 shows an elevation of a food slicing ma- 'chine embodying the teachings ofthe present invention.

Fig. 2 is a fragmentary plan View thereof, partly in section, with platform removed, showing the 50 ,reciprocating carriage and associated cross feed mechanism. v Fig.y 3 is a fragmentary section taken along ,lines 3-3 in Fig. 2 showing the platform and com- ',ponents thereon.

-55 lis a secticnftaken at1ine @-4 in Fig. 2

`frame thereunder.

showing a fragmentary end view of Fig. 1 with the handwheel remove-d.

Fig. 5 is a fragmentary plan view of the adjustment means included in the mechanism.

Fig. 6 is a fragmentary plan view taken of Fig. 5 1 in the direction of lines 6 6.

Fig. '7 is a section taken at line 'l--l in Fig. 6.

Fig. 8 is a diagrammatic assembly View of components included in the means for periodically advancing the substance to be sliced toward the knife.

Fig.Y 9 is a sectional fragmentary View taken at line 9 9 in Fig. 6.

Fig. 10 is a fragmentary section taken at line I U-Ill in Fig. 9. 15

In the drawings the numeral I 5, is'used to designate generally the frame of a slicing machine, and the numeral I6, a carriage frame slidably mounted thereon along the horizontal track members Il and I8. Within the frame, is journalled a horizontally positioned shaft I9, provided with a handwheel 2li, at its forward end extending exteriorly of the frame, from which shaft, a crank means indicated generally by the numeral ZI, is driven, whereby the carriage I E, is slid to and fro along its tracks Il and I8. Also driven from said shaft I9, is the circular knife 24, by a system of sprockets 25 and 26, carrying the chain 2l. This knife is rotatably mounted at one side of the frame I5, so that its plane is parallel to the line of travel of the carriage I6.

The carriage I6, is provided with the fixed track members 28 and 29, intermediate and parallel to which is journalled the screw shaft 30,

along which track members and screw shaft on v the carriage I6, a bracket 3l, is mounted free to slide, which bracket carries a longitudinally slidable pin 32, for engagement in the thread of the screw shaft SIB. Such engagement is normally maintained by action of a coil spring 33, 40 encircling the pin 32, against a collar 34, fixedly mounted on said pin. It is evident that upon rotation of the screw shaft 30, the pin 32 in engagement therewith, will cause the bracket '3I, to be slid across the carriage I6. 4,5

This bracket is` provided With a pair of arms 35 and 36, extending normal thereto at its respective ends, for pivotally mounting the arms 3l at points 38, of a combined food clamp and shifter 39. A platform 40 is secured atop the 50 carriage IE5, on which is placed the substance 4I to be sliced. The bracket 3l, lies beneath this platform 40, and is free to move on the carriage The member 39, of course, moves along with the bracket 3|, and is always .255

over ithe platform 407,.where it is used: to push Y Ythe substance 4I, acrossV the carriage yplatform 46 towards the slicingrknife 24, orY else may be Y used.V to grip said substancejby means ofthe teeth of member 39is alsorprorvided with'teeth elements Y 3,9, Vor other suitable prongs toenga'ge'the sub- Vstance 4I, when said member is used merely as;

Fig.,4 of the s v i 68and a pushing means Y as illustratedY in drawings.Y f Y Arm 36,Y Yhas securely Vfixed Vthereto and lupi-'I 42, while'at arm 35, another wardlyV extending therefrom, a handle VVrriember handle member 43,

is maintained free to pivot ini ring 44. The lower this handltowards 4its mate, `said pin will vloecome disengaged and' said handles manually used to bring the cross `feed Ymeans to initial position Von the carriage.

A plate 46,` for 'supporting'the vertical surface of the substancer4l,'while'it is' being sliced, has' perpendicularly thereto a pairv of forwardlyextending rods 41 and V48, slidably; mounted in the frame I5, Y wherebyl plate 46 Y presents a surf Y j faceV parallel Vto the plane of the knife edge,.and

forward thereof with respect totheV linero'f mojtion 1 of the,V carriage Y I6.

A 41, is"provided with'V aY thread groove' V49, and carries thereon `forward of the frameV I 5, a loosely mounted adjustment wheel `5l); which'wheel is rjournalled inthe frame VI5 yby means of VVscrew'Y pin V5I "which engages said wheel5 :within an annue lar groover52 in the 'reduced end 53 thereof.A

screwA pin 54, through the Ywheel, is engaged VinV Y Y .Y the groove 49."V Uponk manual yrotation Yofthe VVadjustment wheel 59'therplate 46,'will be Vmoved towards orV away fromY the plane' of the knife 24.

Another adjustment simultaneously effected V'upon movement of said wheel 50,'Wil1 be `later explainedY herein.j An arm 55,'pivotally Vsecured, at its lower end on a 4stud 'screw'55,l in the 'iframe VI5,ex' tends upwardly, andisrprovided'withja :pin 56, which isY in'i'sliding 'engagement' in. ,the Vspiral ygroove 51,7`of' a` cam plate 58, which latter is secured by-Ym'e'ansfof screws59 toV the .facerofu the adjustment wheel 50. ItJis evident that Y upon movement ofrthis wheel, the-'arm 55 will be to thevertical, andthe top end thereof fashioned as finger 60, will be at varied positions alongthe, path of travel of the carriage-conveyed rack Vmember 6I and vits'downwardlyprojecting pinv 62, Vinparticular, with whichV it comes in contact Y Vduring 'definite intervals whileithreV carriage I6 t reciprocates.

' Vdownwardly 'therefromthrough a slot 65 in 'said Y structure; the line of vmovement, of which the rack'6I` is capable, bein'g'vp'arallel tothe line of l Y movementof Vthe carriage I6, andthe width ofA derside of 'the carriage II6, againsti the'actiorr of Va co'ilrspringf64 therein, is slidably mounted'said rack member 6I, having the pin 62 extending Vslot 6 5Y being such, whereby the pin 62jtherethrough preventsjaxal rotation of the rack member'6l. YArplug 66 c1oses`63, and ac ts asia stopY for thespring v64.V f Y Y mem-ber Y VgrearrHl, and isjslidable along V'the shaftfend 61,2, against the action of, a coil spring 1I, positioned Y "about said shaft ennand'withsin a Ysocket end o f this handle member 43,.is YpivotallyV linked i byV pinY 45, to the', extending"'end of shaft; `eneV easement pin 32,;whereby upon rriovement; of A knife 24.

l The free end of Yrod Y 1 lfixed inv space',Vv and upon contiuedgmovelnent Y Y had `prefieusiy, 'beenfmadef VVby imam setting. Vshiftedto assume different positions with respect YIn atubular structule63', integral 'of the un.er

' vthe operationrof the machine, .continued j l This inyentionlis-capable fof numero said unthreaded portion; 'at which'time, the

` vbracket 3I and all ity carries, will cease to move,

even upon continued rotation of the screw shaft 30. Terminating thethread asiat 3*0", in effect,

provides a camrto effect Vdisengagement-of rsr'aidi'V pin 32,. whereby the cross feed' bracket 3|, will ,g

mevr-:noY further towardsthe planeptthe knife 241,-V aithpugh; ,me remaimqggccmponngs of the' Y 'machine continue'in operation.; c

other end of thisshaft an, isfeducd, onL

which reduced ends 61, isV fixed 2a clutch-member Y a vlooselycarried complementaryV clutchf,`

69, which latter has fixedthereonra.

12, lin the carriage I6 Atlfiewre'iorprovided. The gear 16 Y isin constant engagement with the rack 6 I, and

Vgreater will be'the extent; of turn oi'.thejs'crrewV shaft Viitlgand Y`the incidentadvance of the cross feed member 39, onzthev platform 40,:towardslthe 25 for settingthe thickness, Y A the ,pitch of thread 49,-jis suchthatwupon any setting of the adjustment wheel 50,*'the plateY 46 will liefbeyond the vplanebf ythe knife 24;"9,

cross-feed 1 member Y 3 9, perucyicle of i the` carriage I6. Y' A pointer 13, fixedto the frame ,'rrlrl'gindl-Y cates aV readingjon'` la scalel graduated onj the l periphery,I kof the"Y :adjustment Awheel `5I!,"f ,the V35 thickness of slice to be accomplished. Q )In operation', upon turning theha- Adwheeli,

knife 24 will beY rotated and the carriage `I6 will( be reciprocated. Each time the carriage chineffinger 60 ofA the arm 55, will intercept Ythe pin'I52V whereby the rack member 6I `become V 6,9, e are 'designed t9 be.: .1n-:enea ement; wher the member y,39 engagingvlethefsubstance/ 4I willV advance across thejcarriage I ,ar distiaungve;vv al to the thickness of slice forgwhich adjustment' rotaryVv axial movementatlthis time.;

As "the ycleisj repeated; me' 'member l Vuntil'thev'piri132 will become disengaged r screw sha'ftfll.V Ihereaftenalthough the fear-fg' riage 1s-continues'toffecipmeasand-sammy-05 shaft periodically turned, said member{.39

will receive no ifurther -movement,f Nqw, jby f meansof the handles-Rand 43, said lriemhexuilV 1 Secured ,on thetraketz-Bl-f may 'b brousht ib initial operating position on'theplatfrorm .'49, and70 and various appliatloh Withtldlefparting.

4v.the essential features herein disclosed; fIt-is s. y therefore fmnaeurana desired than the enfb'cx1-1- i5 ioV Hence an adjustablelmeansis provided of slice desired;V "Also,

.36; Y distance'equal to the viistance advanced bythe from I ment shown herein be deemed illustrative and not restrictive, and that the patent shall cover Whatever features of patentable novelty exist in the invention disclosed; reference being had to the following claims, rather than to the specic description herein to indicate the scope of the invention.

I Claim:

1. In a slicing machine having a frame, the

Acombination of a slicing knife, means to convey the substance to be sliced into engagement with the knife, a shaft slidably mounted in the frame; said shaft being threaded at one end thereof, a plate secured at the other end of said shaft presenting a surface parallel to that of the slicing knife, adapted for support of the substance While it is sliced, means mounted on said conveying means, adapted When actuated to periodically shift the substance across the conveying means, an arm pivotally mounted on the frame adapted to intercept and operate the latter means prior to an engagement of the substance to be sliced With the knife, a Wheel loose on said shaft at the threaded end thereof, journalled kin the frame, a pin through the Wheel in engagement with the thread in the shaft, a cam carried on said Wheel, and a follower means connecting said frame and cam; the positioning of the plate and arm being such upon movement of the Wheel, that the plate will be shifted to a position beyond the plane of the knife, a distance equal to the periodic advance of the substance across the conveying means eected by the attending change of position of the arm due to such movement of the Wheel.

2. In a slicing machine having a frame, the combination of a slicing knife, acarriage slidably mounted on the frame, for conveying the substance to be sliced into engagement with the slicing knife, a bracket slidably mounted on the carriage for travel thereon transverse the path of travel of said carriage, adapted to engage said substance, a screw shaft `iournalled on the carriage along a line parallel to the line of travel of the bracket, a pin slidably mounted on the bracket, in releasable engagement with the screw shaft in the thread thereof, a clutch member secured on said shaft, a complementary clutch member rotatably and slidably mounted on the shaft, means to maintain the clutch members normally in engagement, a gear securely mounted on the second clutch member; said clutch members being adapted to be in engagement upon rotation of the gear in one direction and to be disengaged upon reverse rotation of the gear, a rack slidably mounted on the bracket along a line parallel to the path of travel of the carriage; said rack and gear being in constant engagement, means to normally maintain said rack at a delinite position on the bracket, an element extending from the rack, an arm -movably mounted on the frame, extending in the path of said element and adapted to intercept same prior to an engagement of the substance to be sliced and the knife, a shaft slidably mounted in the frame; said shaft being threaded at one end thereof, a plate secured at the other end of said shaft presenting a surface parallel to that of the slicing knife, adapted for support of the substance while it is sliced, a Wheel loose on said shaft at the threaded end thereof, journalled in the frame, a pin through the Wheel in engagement with the thread in the shaft, a cam carried on said Wheel, and a follower means connecting said frame and cam; the positioning of the plate and arm being such upon movement of the Wheel, that the plate Will be shifted to a position beyond the plane of the knife, a distance equal to the periodic advance of the bracket effected by the attending change of position of the arm due to such movement of the Wheel.

OTTO THEURER. 

